View Compilation Error

0_0_32759916_415.cpp: In function 'int main()':
0_0_32759916_415.cpp:68:37: error: 'memset' was not declared in this scope
         memset(head, -1, sizeof head);
                                     ^
0_0_32759916_415.cpp:85:27: error: expected primary-expression at end of input
                 max_choice[
                           ^
0_0_32759916_415.cpp:85:27: error: expected ']' at end of input
0_0_32759916_415.cpp:85:27: error: expected '}' at end of input
0_0_32759916_415.cpp:85:27: error: expected '}' at end of input
0_0_32759916_415.cpp:85:27: error: expected '}' at end of input
0_0_32759916_415.cpp:85:27: error: expected '}' at end of input